Well Barega was over cooked already coming in Eugene, so ...
But even then, it's not only the last lap, it's the 2 last laps. Can Barega run 53 secs, off a 58 secs penultimate lap ?
Also I think Jakob could have gone slightly faster in the last lap if he was challenged more.
His last 4 splits were :
13.7, 13.5, 13.2, 13.5
I think he could have gone 13.5 - 13.5 - 13.2 - 13.00.